The DSC Book
The DSC Book
About the Book
This is now an open-source book. Anything you choose to pay for the Leanpub version will go entirely to the DevOps Collective’s IT scholarship programs. Visit GitHub.com/dsccommunity/TheDSCBook to contribute to this project!
Microsoft MVP Award recipient Don Jones and in-the-trenches DSC expert Missy Januszko tackle the enormous and complex topic of Desired State Configuration (DSC) in this "agile-published" book that will continue to be expanded and updated over time. Covering everything from design principles and infrastructure deployment, to configuration authoring, and to custom resource design and programming, you'll find everything you need in this comprehensive tome. And what you might not find in this book will be added and revised over time - making this your "forever" book on the subject, unlike traditionally published volumes.
The DSC Book is designed to help you understand how DSC works, and how you can use it in a variety of scenarios. Examples are, for the most part, extremely concise - they're intended to help you understand the needed structure and approach. You should already be very familiar with coding advanced functions ("script cmdlets") in PowerShell, or consider purchasing Learn PowerShell Toolmaking in a Month of Lunches to gain that background knowledge. The practices and approaches presented in the book come from real-world engagements and experiences, and will continue to evolve over time as more and more people engage with DSC. Those "over time" learnings will be incorporated into the book, hopefully making it the last DSC book you'll ever need to buy.
- About This Book
- About the Authors
A Note on Code Listings
- Code Samples
- What is DSC?
- Not Just for Provisioning
- How Does DSC Compare to Group Policy?
- Cattle, Not Pets
- Technology, not Tool
- A 2018 Update: What is DSC Good For?
Part 1: Design Decisions
- The Players
- The Pieces
- The CIM Connection
- Uniqueness in MOFs
- Getting the MOF to the LCM
- Configuration Variations
- Understanding Dependencies
- Designing DSC
Part 2: Configuring the Infrastructure
- Infrastructure Prerequisites
Configuring the LCM
- Checking the Configuration
- Changing the Configuration
- Deploying the LCM Configuration
- Specifying Configuration Pull Servers
- Specifying DSC Resource Pull Servers
- Specifying Reporting Servers
- Partial Configurations
- Versions and Troubleshooting
Setting Up a Pull Server
- Before You Begin
- Reprising the Roles
- A Word of Caution
- Step 1: Install the Module
- Step 2: Get an SSL Certificate
- Step 3: Make a GUID
- Step 4: Set Up DSC
- Step 5: Run and Deploy the Config
- Confirming the Setup
- Life Choices
- Opting Out of the Pull Server Approach
Part 3: Testing the Infrastructure
Testing Push Mode
- Creating the Configuration
- Running the Configuration to Produce a MOF
- Pushing the MOF
Testing Pull Mode
- Creating the Configuration
- Running the Configuration to Produce a MOF
- Deploying the MOF and Module to a Pull Server
- Creating a Meta-Configuration
- Pushing the Meta-Configuration to a Node
- Pulling the Configuration from the Pull Server
- Verifying the Node’s State
- Testing Push Mode
Part 4: Authoring Configurations
Basic Configuration Authoring
- Getting Started: The Configuration Block
- Adding Nodes
- Adding a Parameter Block
- Adding Settings
- Adding Basic Logic
- Adding Node-Side Logic
- Documenting Dependencies
- Running the Configuration
- Deploying the MOF
- Wrapping Up
Going Further with Configurations
- Again: DSC isn’t Tooling
- Understanding ConfigurationData
- Defining Configuration Data
- Referencing and Using Configuration Data
- All-Nodes Data
- Using the $AllNodes Variable
- Configuration Script Strategies
- Using NonNodeData
Poor Man’s Configuration Modularization
- Dot Sourcing
- Approach Analysis
- Creating a Composite Resource
- Turning the Configuration into a Resource Module
- Using the Composite Resource
- Deploying the Composite Resource
- Approach Analysis
- Design Considerations
- Summarizing Partial Configuration Pros and Cons
- Authoring a Partial Configuration MOF
- Configuring the LCM for Partial Configurations
- Partial Configuration Dependencies
- Partial Configuration Authoritative Resources
- Mix ‘n’ Match
- File Naming Details
- Deploying MOFs to a Pull Server
- Basic Configuration Authoring
Part 5: Using and Authoring Resources
Finding and Using Resources
- Finding What’s Out There
- Installing What’s Out There
- Finding What’s Installed
- Figuring Out What a Resource Wants
- Before We Begin: Function-Based vs. Class-Based
- Writing the Functional Code
- Writing the Interface Module
- Preparing the Module for Use and Deployment
- Triggering a Reboot
Class-Based Custom Resources
- Writing the Class-Based Interface Module
- Preparing the Module for Use
Best Practices for Resource Design
- Principle One: Resources are an Interface
- Thinking About Design
- For Example
- Advantages of the Approach
- Disadvantage of the Approach
The Script Resource
- The Basics
- Cool Tricks
- Finding and Using Resources
Part 6: Advanced Stuff
- Understanding the Default Report Server
- Querying Report Data
- The AgentId
Security and DSC
- A Word on Certificates
- Securing the Pull Server
- Securing Credentials in Configurations
- Digital Signing
- DSC in Azure
- DSC on Linux
Troubleshooting and Debugging
- Getting Eyes-On
- Resource Debugging
- Stopping a Hung LCM
- Understanding the LCM’s Processing
- The Basic Self-Modifying Workflow
- A Problem to Consider
- Crazy Ideas for What the Bootstrap Can Do
The Scaling Question
- DSC Already Scales - But You Don’t
- Let’s Set the Stage
- Raise Cattle, Not Pets
- Enter Containers
- Rock-Solid Infrastructure
- Getting Back to DSC
- The Perfect Example
LCM and Pull Server Communications
- The Database
- Error configuring the LCM: “Specified Property does not exist,” “MI RESULT 12”
- Registration Key Problems
- maxEnvelopeSize Errors
- Reporting Server and Large Configurations
- Class-Based Resources Can’t be ExclusiveResources in Partials
DevOps Collective Scholarshipshttp://devopscollective.org
Support IT education scholarships by giving to The DevOps Collective, Inc.
The Leanpub 45-day 100% Happiness Guarantee
Within 45 days of purchase you can get a 100% refund on any Leanpub purchase, in two clicks.
See full terms
Free Updates. DRM Free.
If you buy a Leanpub book, you get free updates for as long as the author updates the book! Many authors use Leanpub to publish their books in-progress, while they are writing them. All readers get free updates, regardless of when they bought the book or how much they paid (including free).
Most Leanpub books are available in PDF (for computers), EPUB (for phones and tablets) and MOBI (for Kindle). The formats that a book includes are shown at the top right corner of this page.
Finally, Leanpub books don't have any DRM copy-protection nonsense, so you can easily read them on any supported device.
Algebra-Driven DesignSandy Maguire
A how-to field guide on building leak-free abstractions and algebraically designing real-world applications.
Production HaskellMatt Parsons
Are you excited about Haskell, but don't know where to begin? Are you thrilled by the technical advantages, but worried about the unknown pitfalls? This book has you covered.
Machine Learning EngineeringAndriy Burkov
"If you intend to use machine learning to solve business problems at scale, I'm delighted you got your hands on this book."
—Cassie Kozyrkov, Chief Decision Scientist at Google
"Foundational work about the reality of building machine learning models in production."
—Karolis Urbonas, Head of Machine Learning and Science at Amazon
The Hundred-Page Machine Learning BookAndriy Burkov
Everything you really need to know in Machine Learning in a hundred pages.
Ansible for DevOpsJeff Geerling
Ansible is a simple, but powerful, server and configuration management tool. Learn to use Ansible effectively, whether you manage one server—or thousands.
OpenIntro StatisticsDavid Diez, Christopher Barr, Mine Cetinkaya-Rundel, and OpenIntro
A complete foundation for Statistics, also serving as a foundation for Data Science.
Leanpub revenue supports OpenIntro (US-based nonprofit) so we can provide free desk copies to teachers interested in using OpenIntro Statistics in the classroom and expand the project to support free textbooks in other subjects.
More resources: openintro.org.
Cloud StrategyGregor Hohpe
While most enterprises are moving to the cloud these days, many initiatives are driven by wishes or promises rather than a sound strategy. Harvested from half a decade of cloud migrations, this book shares frameworks, strategies, and anecdotes for a structured and decision-centric path to cloud success.
Sockets and PipesType Classes
Sockets and Pipes is not an introduction to Haskell; it is an introduction to writing software in Haskell. Using a handful of everyday Haskell libraries, this book walks through reading the HTTP specification and implementing it to create a web server.
C++ Best PracticesJason Turner
Level up your C++, get the tools working for you, eliminate common problems, and move on to more exciting things!
Practical FP in Scala: A hands-on approachGabriel Volpe
A practical book aimed for those familiar with functional programming in Scala who are yet not confident about architecting an application from scratch.
Together, we will develop a purely functional application using the best libraries in the Cats ecosystem, while learning about design patterns and best practices.
The Node.js Bundle
3 BooksThis bundle combines three bestselling Leanpub Node.js books into a package that gives you everything you need to get started with developing Node.js applications at an unbeatable price.
The Tester's Library
8 BooksThe Tester's Library consists of eight five-star books that every software tester should read and re-read. As bound books, this collection would cost over $200. Even as e-books, their price would exceed $80, but in this bundle, their cost is only $49.99. Here are the books, and why they should be in your library: Perfect Software and Other...
11 BooksIn this bundle, you will find 10 different agile books. They are about different aspects of being agile. - finding a job - doing coding dojo's - Retrospectives - Personal kanban - a non-typical coaching book and even a book that gives you an insight in the lives of some agile people.
WTFlop 6M + HU - Beta Bundle
Fifty Quick Ideas
3 BooksGet all three books for the price of two! Fifty Quick Ideas books are full of practical, real-world techniques that you can use to improve teamwork, build better products and build them in a better way.
Growing Agile: Coach's Guide Series
4 BooksThis bundle provides a collection of training and workshop plans for a variety of agile topics. The series is aimed at agile coaches, trainers and ScrumMasters who often find themselves needing to help teams understand agile concepts. Each book in the series provides the plans, slides, handouts and activity instructions to run a number of...
Marionette.js A to Z
Complete Scala Bundle
3 BooksScala is a general-purpose programming language and it's getting extremely popular these days. Some say that learning Scala could be a challenging task. My experience, however, suggests that this is actually a myth that has very little to do with reality. With the right approach, learning Scala can be easy, fun and rewarding.The first book from...
Build A Better Backbone App
3 BooksThe best way to learn new development skills is through experience, but that takes time you don't have.Get the best of both worlds with this bundle: you'll learn how to produce modern web applications by learning from experienced developers like Derick Bailey and David Sulc. BackboneJS is one of the favorite tools on the web today, but it...